Druck PV 411 User Manual
K258 Issue No. 1
Page 8
Generating pneumatic pressure and vacuum
Connect the pump as detailed on page 5.
Notes
Compressing a gas generates heat. Gas heated or cooled in
an enclosed volume causes a pressure change. It is
important to allow enough time for the heated gas to cool and
the pressure to stabilize.
The number of pumps required to generate a pressure
depends on the volume of the system. Therefore, keep the
system volume to a minimum.
Pressure
1
Turn the selector valve fully clockwise (in) position.
2
Operate the scissor-action handles to generate the
approximate pressure, allow time for thermal stabilization.
3
If necessary, use the volume adjuster to adjust the required
pressure.
4
After attaining the required pressure operate the scissor-
action handles to generate a higher pressure. Alternatively, vent
the pressure to atmosphere by slowly turning (anti-clockwise) the
selector valve to the centre position.
Vacuum
1
Turn the selector valve fully anti-clockwise (out) position.
2
Operate the scissor-action handles to generate the
approximate vacuum, allow time for thermal stabilization.
3
If necessary, use the volume adjuster to adjust the required
vacuum.
